Experimental investigation of vector mesons in medium through dielectron decay at J-PARC
Spontaneous breaking of the chiral symmetry in Quantum Chromodynamics plays a crucial role in generating hadron mass. Theoretical studies suggest that this broken symmetry may be partially restored even at normal nuclear density, leading to measurable differences in hadron masses. The J-PARC E16 experiment was designed to measure the spectral change of vector meson in a nuclear medium. It measures e + e − invariant mass spectra in 30 GeV p +A collisions at J-PARC. Importantly, the mass depends not only on momentum but also on polarization. Polarization dependence can, in principle, be experimentally investigated. We describe the experiment’s status and discuss a method of measuring polarization-dependent mass.
Authors
- Hitoshi Sugimura (ORCID: https://orcid.org/0000-0003-0438-9140)
- S. Yokkaichi (ORCID: https://orcid.org/0000-0003-2336-3878)
- Koki Kanno
- R. Honda (ORCID: https://orcid.org/0000-0002-1783-9334)
- H. Noumi (ORCID: https://orcid.org/0000-0002-5144-2955)
- F. Sakuma (ORCID: https://orcid.org/0000-0003-2490-0508)
- H. Hamagaki (ORCID: https://orcid.org/0000-0003-3808-7917)
- Satomi Nakasuga (ORCID: https://orcid.org/0000-0001-8329-1648)
- W. C. Chang (ORCID: https://orcid.org/0000-0002-1695-7830)
- K. Aoki (ORCID: https://orcid.org/0000-0003-2418-0029)
- Shuta Ochiai
- Wataru Nakai
- H. Sako (ORCID: https://orcid.org/0000-0002-4273-4470)
- K. Shirotori (ORCID: https://orcid.org/0000-0002-1444-5380)
- Shiori Yanai (ORCID: https://orcid.org/0000-0003-4922-784X)
- Toshihiro Nonaka (ORCID: https://orcid.org/0000-0003-1247-5719)
- Shunnosuke Nagafusa
- S. Ashikaga (ORCID: https://orcid.org/0000-0002-9514-9531)
- R. Muto (ORCID: https://orcid.org/0000-0002-4896-826X)
- M. Naruki (ORCID: https://orcid.org/0000-0003-1773-2999)
- Tomohiro Taniguchi (ORCID: https://orcid.org/0000-0001-6392-3767)
- M. Ichikawa (ORCID: https://orcid.org/0000-0002-6882-5477)
- T. Chujo (ORCID: https://orcid.org/0000-0001-5433-969X)
- Daiji Ishii
- Yusuke S. Hori (ORCID: https://orcid.org/0000-0001-9921-6810)
- Kanako H. Yamaguchi
- S. Sawada (ORCID: https://orcid.org/0000-0002-7122-1690)
- Yuhei Morino
- Chih‐Hsun Lin (ORCID: https://orcid.org/0000-0002-8578-7775)
- Johann M. Heuser
- Takao Sakaguchi
- ShinIchi Esumi
- Tomonori Takahashi (ORCID: https://orcid.org/0009-0004-7652-4019)
- Yorito Yamaguchi
- Tomoki N. Murakami
- Susumu Sato
- Kyoichiro Ozawa
- R. Yamada
- Alberica Toia
- A. Kiyomichi
- Maksym Teklishyn
- Shunsuke Kajikawa
- D. Rodríguez Garcés
- H. En’yo (ORCID: https://orcid.org/0009-0006-2729-950X)
- M. Sekimoto
- Makoto Ogura
- Ren Ejima (ORCID: https://orcid.org/0009-0004-8219-2743)
- A. Rodriguez
- Kenta Shigaki
- Jo Kakunaga
Institutions
- Hiroshima University (JP)
- Goethe University Frankfurt (DE)
- High Energy Accelerator Research Organization (JP)
- University of Tsukuba (JP)
- GSI Helmholtz Centre for Heavy Ion Research (DE)
- Nagasaki Institute of Applied Science (JP)
- Tohoku University (JP)
- Kyoto University (JP)
- Japan Synchrotron Radiation Research Institute (JP)
- Institute of Physics, Academia Sinica (TW)
- RIKEN Nishina Center (JP)
- The University of Tokyo (JP)
- The University of Osaka (JP)
Publication Details
- Journal
- Journal of subatomic particles and cosmology.
- Published
- 2024-12-28
- DOI
- https://doi.org/10.1016/j.jspc.2024.100019
- Citations
- 5
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 3.30
Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Ministry of Science and Technology, Taiwan
- Japan Society for the Promotion of Science